But there were early signs his sharpness was returning as he headed down for Candeias to fire over, while he also slipped in Alfredo Morelos later on only for the little Columbian to be denied by Danny Devine's desperate lunge.

There were, though, also moments where he looked rusty. For example after 36 minutes, his attempt to dummy the ball for Josh Windass proved ill-advised as Thistle snatched possession.

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That proved costly as Doolan sent the tie into extra time with his last-minute leveller. Adam Barton sent a deep cross to the back post, Sammon headed down and the Jags poacher did the rest from close range.

But Candeias made amends four minutes after the restart as collected Herrera's tee-up before lashing an unstoppable drive low past Scully.

Herrera then made sure of Gers' place in the semis on the 99th minute as he cleverly flicked home from a Candeias centre.